EP1662493A3 - Recording at constant angular velocity - Google Patents

Recording at constant angular velocity Download PDF

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Publication number
EP1662493A3
EP1662493A3 EP05027206A EP05027206A EP1662493A3 EP 1662493 A3 EP1662493 A3 EP 1662493A3 EP 05027206 A EP05027206 A EP 05027206A EP 05027206 A EP05027206 A EP 05027206A EP 1662493 A3 EP1662493 A3 EP 1662493A3
Authority
EP
European Patent Office
Prior art keywords
data
recording
angular velocity
constant angular
recording block
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05027206A
Other languages
German (de)
French (fr)
Other versions
EP1662493A2 (en
EP1662493B1 (en
Inventor
Natsuko c/o Yokohama Research Center Nobukuni
Takashi c/o Yokohama Research Center Ohno
Masae c/o Yokohama Research Center Kubo
Michikazu c/o Yokohama Research Center Horie
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Chemical Media Co Ltd
Original Assignee
Mitsubishi Chemical Media Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Chemical Media Co Ltd filed Critical Mitsubishi Chemical Media Co Ltd
Priority to EP08002562A priority Critical patent/EP1936612B1/en
Publication of EP1662493A2 publication Critical patent/EP1662493A2/en
Publication of EP1662493A3 publication Critical patent/EP1662493A3/en
Application granted granted Critical
Publication of EP1662493B1 publication Critical patent/EP1662493B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

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    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/258—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of reflective layers
    • G11B7/259—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of reflective layers based on silver
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/21—Circular sheet or circular blank

Abstract

Data-sequence synchronization circuit for synchronizing a data sequence, which is to be written in a given recording block, with the start position of recording block by comparing in phase between a reference signal fR0, wich is obtained by dividing a data reference clock having a frequency fd0 at a particular radius by N (N is an integer), and a carrier frequency fA0, which is detected at the given address from a meandering track geometry, and also making a fine adjustment or r.p.m. (revolutions per minute) of the disk so as to satisfy a relation fd0=N·fA0.
EP05027206A 1999-05-19 2000-05-17 Recording at constant angular velocity Expired - Lifetime EP1662493B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08002562A EP1936612B1 (en) 1999-05-19 2000-05-17 Recording at constant angular velocity

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP13806699 1999-05-19
JP26359599 1999-09-17
JP35067699 1999-12-09
EP00110517A EP1056077B1 (en) 1999-05-19 2000-05-17 Phase change optical recording by divided recording pulses

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP00110517.0 Division 2000-05-17
EP00110517A Division EP1056077B1 (en) 1999-05-19 2000-05-17 Phase change optical recording by divided recording pulses

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP08002562A Division EP1936612B1 (en) 1999-05-19 2000-05-17 Recording at constant angular velocity
EP08002562.0 Division-Into 2008-02-12

Publications (3)

Publication Number Publication Date
EP1662493A2 EP1662493A2 (en) 2006-05-31
EP1662493A3 true EP1662493A3 (en) 2006-09-13
EP1662493B1 EP1662493B1 (en) 2010-07-14

Family

ID=27317594

Family Applications (4)

Application Number Title Priority Date Filing Date
EP05028282A Expired - Lifetime EP1646043B1 (en) 1999-05-19 2000-05-17 Rewritable optical recording medium and methods of recording EFM-modulated information on the recording medium
EP05027206A Expired - Lifetime EP1662493B1 (en) 1999-05-19 2000-05-17 Recording at constant angular velocity
EP08002562A Expired - Lifetime EP1936612B1 (en) 1999-05-19 2000-05-17 Recording at constant angular velocity
EP00110517A Expired - Lifetime EP1056077B1 (en) 1999-05-19 2000-05-17 Phase change optical recording by divided recording pulses

Family Applications Before (1)

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EP05028282A Expired - Lifetime EP1646043B1 (en) 1999-05-19 2000-05-17 Rewritable optical recording medium and methods of recording EFM-modulated information on the recording medium

Family Applications After (2)

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EP08002562A Expired - Lifetime EP1936612B1 (en) 1999-05-19 2000-05-17 Recording at constant angular velocity
EP00110517A Expired - Lifetime EP1056077B1 (en) 1999-05-19 2000-05-17 Phase change optical recording by divided recording pulses

Country Status (5)

Country Link
US (6) US7452582B1 (en)
EP (4) EP1646043B1 (en)
JP (1) JP4528347B2 (en)
DE (4) DE60042907D1 (en)
TW (1) TW559803B (en)

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US7345977B2 (en) 2008-03-18
US7452582B1 (en) 2008-11-18
US7333414B2 (en) 2008-02-19
US7027371B2 (en) 2006-04-11
US20070177477A1 (en) 2007-08-02
DE60027815T2 (en) 2006-12-21
DE60038583D1 (en) 2008-05-21
EP1662493A2 (en) 2006-05-31
EP1646043B1 (en) 2008-04-09
TW559803B (en) 2003-11-01
US7408852B2 (en) 2008-08-05
DE60042907D1 (en) 2009-10-15
EP1056077A3 (en) 2002-04-17
US20040246835A1 (en) 2004-12-09
JP2009181692A (en) 2009-08-13
JP4528347B2 (en) 2010-08-18
EP1662493B1 (en) 2010-07-14
DE60044691D1 (en) 2010-08-26
DE60027815D1 (en) 2006-06-14
US20070127342A1 (en) 2007-06-07
US20040190407A1 (en) 2004-09-30
EP1056077B1 (en) 2006-05-10
EP1646043A1 (en) 2006-04-12
US20050207310A1 (en) 2005-09-22
US7561502B2 (en) 2009-07-14
DE60038583T2 (en) 2009-06-04
EP1056077A2 (en) 2000-11-29
EP1936612A1 (en) 2008-06-25
EP1936612B1 (en) 2009-09-02

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